I Believe the reason He gives the Bosses lives is because the Regen ability some of them get might be based off a % of their Maximum health. But I dont know for sure if that is the case wither way.
Level 200 Boss was fun. Glad I had a AoE Shot with my main Cannon or it would have been impossible to kill.
Some things for those who are curious.
Special Cannons include:
1. The Poopy: Increases Team Damage when you level it up.(Stacks with each poopy cannon you have out.
2. Grind: When Leveld up, it increases gold earned, same as above, in that it stacks.
3. Grumpy: Bullet Size increase, Has Piercing, and Multi Bullet fire Upgrades. but Fires SLOWLY.
4. Scoopy: its last upgrade before the standard "Quadruples Damage every 25th Level beyond 200" Increases team damage by 10%.(Same as above, it stacks with multiple Scoopy cannons.)
6. Spooky: Has a upgrade that pushes enemies back to the edge of the screen. I find this more annoying that useful tbh. but i might be wrong, just not my style.
7. Alpha Factory is only good till you can get the upgrade at level 10, so dont buy till you can get that. Its pretty much useless till then. Its level 50 upgrade helps again with horizontal shots.
I did a unify after having the game open for a couple hours. Selecting an upgrade didn't show the description nor could i upgrade. I refreshed the page and lost everything. Just a day's worth having it open lost, so not much. Time to start again!